Lamp



FIG. 1 is a perspective view of a lamp, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

Portions shown in broken lines form no part of the claimed design.

CLAIM The ornamental design for a lamp, as shown and described.